Insole

ABSTRACT

The present invention relates to a insole which is mainly made by the following process: reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, recycled yarn into fiber; intermingling plastic fiber with the above fiber of recycled material and then conducting needle punching to form air-permeable thick layer of nonwoven fabric having 3-10 mm thickness; adhering nonwoven fabric or cover layer made by general fabric onto the air-permeable thick layer of non-woven fabric; conducting heat forming and cutting into suitable size. In this manner, not only the insole made by recycled material possesses environment protection feature but also the air-permeable thick layer of nonwoven fabric, which is needle punched from fiber, has excellent air permeability and appropriate elastic effect. Therefore, users have snug feeling achieved by good air permeability and shock absorption so that it has better performance in its total application.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an insole, particularly to an insolehaving environment protection feature, excellent air permeability andappropriate elastic effect, which is made from recycled materials suchas PET bottle, PET plastic material, waste fabric, recycled yarn.Therefore, users have snug feeling achieved by good air permeability andshock absorption so that it can provide better performance in its totalapplication.

2. Brief Description of the Prior Art

People often wear shoes for safety and clean reasons so as to protectfoot from abrasion or piercing by pebble or foreign object when walkingon rough or hard ground and to keep clean with hygiene at foot. Shoeshas been evolved from straw sandals, clogs etc. at early stage to shoesnowadays made by a variety of materials such as cloth shoes, leathershoes. As to the style and color, a variety of beautiful, magnificentand specialized shoes have been developed under endless pursuit ofnovelty and originality by the industries.

In order to improve wearing snugness, most of shoes sold on the marketoften incorporate extra insoles inside the shoes. The insoles is formedas a foamed material firstly by conducting foam-molding on a resin whichis incorporated with foam material, then the foamed material is cut toform insoles with suitable size matching with the shape of shoes. Thethenar of foot has more flexible feeling of snugness when user wearsshoes having above insoles made from the foamed material and providedinside the shoes.

The above insole can achieve expected effectiveness of much moresnugness when users wear shoes with the insole, but it is found inpractical application that the insole, formed by conducting foam-moldingon a resin incorporated with a foam material, usually has poor airpermeability. Users often feel muggy when wearing these insoles.Furthermore, this insole made by foam material has no environmentprotection feature. Thus, this insole still has got space forimprovement.

In view of the above facts, inventor of the present invention provides anew insole according to the improvement conducted on defects of theexisting structure based on his abundant experience of R&D andmanufacturing in relevant field so as to attain better performance inpractical application.

SUMMARY OF THE INVENTION

The insole of the present invention is mainly made by the followingprocess: reeling off single thread filament from recycled materials suchas PET bottle, PET plastic material, waste fabric, yarn into fiber;intermingling plastic fiber with the above reeled-off fiber and thenconducting needle punching to form air-permeable thick layer of nonwovenfabric having 3-10 mm thickness; adhering nonwoven fabric or cover layermade by general fabric on the air-permeable thick layer of non-wovenfabric; conducting heat forming and cutting into suitable for ready use.In this manner, not only the insole made by recycled material possessesenvironment protection feature but also the air-permeable thick layer ofnonwoven fabric needle-punched from fiber has excellent airpermeability. Therefore, users have snug feeling achieved by good airpermeability and shock absorption so that it has better performance inits total application.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective exploded view showing the insole of the presentinvention.

FIG. 2 is a schematic view showing the molded insole of the presentinvention.

FIG. 3 is a partial enlarged sectional schematic view showing the insoleof the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The objects, the technical contents and the expected effectiveness ofthe present invention will become more apparent from the detaileddescription of the preferred embodiment in conjunction with theaccompanying drawings.

Firstly referring to FIG. 1 showing a perspective exploded view of theinsole of the present invention, the insole is formed by a cover layer(1) adhered onto an air-permeable thick layer of nonwoven fabric (2).

The cover layer (1) can be formed by nonwoven fabric or general fabric.

The air-permeable thick layer of nonwoven fabric (2) is formed byfirstly reeling off single thread filament from recycled materials suchas PET bottle, PET plastic material, waste fabric, or recycled yarn intofiber, then by intermingling plastic fiber with the above fiber ofrecycled material, and then conducting needle punching. Theair-permeable thick layer of nonwoven fabric (2) has a thickness ofapproximately 3-10 mm.

In this manner, please refer to FIG. 2 and FIG. 3, after the cover layer(1) is adhered onto the air-permeable thick layer (2) of nonwovenfabric, heat forming process and subsequently cutting process isconducted to form insole of suitable size for ready use. Heat formingcan be conducted on the insole according to specific profile of foot, orhigh flexibility forming within the range of 100-150° C. can beconducted on the insole according to specific flexibility.

The abovementioned embodiments and drawings are not used to limit of thescope of the present invention. Equivalent variations and modificationsmade by the person skilled in the art without departing from the spiritand scope of the present invention are still considered to be within thescope of the present invention.

Based on the foregoing, the insole of the present invention has thefollowing advantages when comparing with the structure of conventionalinsole.

-   1. The insole of the present invention is mainly made by the    following process: reeling off single thread filament from recycled    materials such as PET bottle, PET plastic material, waste fabric, or    recycled yarn into fiber; intermingling plastic fiber with the above    fiber of recycled material and then conducting needle punching to    form air-permeable thick layer of nonwoven fabric having 3-10 mm    thickness; adhering nonwoven fabric or cover layer made by general    fabric onto the air-permeable thick layer of nonwoven fabric;    conducting heat forming and cutting into suitable size. In this    manner, not only the insole made by recycled material possesses    environment protection feature but also the air-permeable thick    layer of nonwoven fabric, which is needle punched from fiber, has    excellent air permeability and appropriate elastic effect.    Therefore, users have snug feeling achieved by good air permeability    and shock absorption so that it has better performance in its total    application.-   2. The insole of the present invention is made by reeling off single    thread filament from recycled materials such as PET bottle, PET    plastic material, waste fabric, or recycled yarn into fiber and then    by molding, waste can be reduced, the garbage amount burned in the    garbage furnish can be decreased, and the service life of garbage    landfill can be extended. Therefore, product becomes more valuable    and meaningful by using recycled resources.-   3. The insole of the present invention is mainly made by reeling off    single thread filament from recycled materials such as PET bottle,    PET plastic material, waste fabric, or recycled yarn into fiber, and    then by intermingling plastic fiber with the above fiber of recycled    material. Multilayer of air-permeable space are formed by the    intermingling between the fiber of recycled material and the plastic    fiber so that better air permeable feature and appropriate    elasticity can be obtained.

Summing up above, the insole of this invention can reach expectedeffectiveness, and the specific configurations disclosed herein have yetnot seen in the prior art of the same category of product, even has notbeen opened to the public before application.

1. An insole, wherein said insole is formed by adhering a cover layeronto an air-permeable thick layer of nonwoven fabric which is formed byreeling off single thread filament from recycled materials and byintermingling the fiber of recycled materials with plastic fiber andthen by needle punching.
 2. An insole as claimed in claim 1, whereinsaid cover layer is nonwoven fabric.
 3. An insole as claimed in claim 1,wherein said cover layer is general fabric.
 4. An insole as claimed inclaim 1, wherein said air-permeable thick layer of nonwoven fabric has athickness of 3-10 mm.
 5. An insole as claimed in claim 1, wherein therecycled material of said air-permeable thick layer of nonwoven fabricis PET bottle.
 6. An insole as claimed in claim 1, wherein the recycledmaterial of said air-permeable thick layer of nonwoven fabric is PETplastic material.
 7. An insole as claimed in claim 1, wherein therecycled material of said air-permeable thick layer of nonwoven fabricis waste fabric.
 8. An insole as claimed in claim 1, wherein therecycled material of said air-permeable thick layer of nonwoven fabricis recycled yarn.
 9. An insole as claimed in claim 1, wherein heatforming is conducted on said insole according to specific profile offoot.
 10. An insole as claimed in claim 1, wherein high flexibilityforming within the range of 100-150° C. can be conducted on the insoleaccording to specific flexibility.